java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-EXP.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem15_label26_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-07 09:06:52,334 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-07 09:06:52,336 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-07 09:06:52,350 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-07 09:06:52,350 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-07 09:06:52,351 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-07 09:06:52,352 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-07 09:06:52,354 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-07 09:06:52,356 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-07 09:06:52,357 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-07 09:06:52,358 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-07 09:06:52,358 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-07 09:06:52,359 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-07 09:06:52,360 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-07 09:06:52,361 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-07 09:06:52,362 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-07 09:06:52,363 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-07 09:06:52,367 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-07 09:06:52,371 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-07 09:06:52,372 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-07 09:06:52,376 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-07 09:06:52,377 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-07 09:06:52,385 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-07 09:06:52,385 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-07 09:06:52,385 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-07 09:06:52,386 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-07 09:06:52,387 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-07 09:06:52,392 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-07 09:06:52,393 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-07 09:06:52,396 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-07 09:06:52,396 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-07 09:06:52,397 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-07 09:06:52,397 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-07 09:06:52,397 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-07 09:06:52,398 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-07 09:06:52,399 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-07 09:06:52,399 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-EXP.epf [2018-11-07 09:06:52,423 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-07 09:06:52,423 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-07 09:06:52,424 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-07 09:06:52,425 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-07 09:06:52,425 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-07 09:06:52,425 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-07 09:06:52,425 INFO L133 SettingsManager]: * Explicit value domain=true [2018-11-07 09:06:52,425 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-07 09:06:52,426 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-07 09:06:52,426 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-07 09:06:52,426 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-07 09:06:52,426 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-07 09:06:52,426 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-07 09:06:52,427 INFO L133 SettingsManager]: * Interval Domain=false [2018-11-07 09:06:52,427 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-07 09:06:52,427 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-07 09:06:52,429 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-07 09:06:52,429 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-07 09:06:52,429 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-07 09:06:52,429 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-07 09:06:52,430 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-07 09:06:52,430 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-07 09:06:52,430 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-07 09:06:52,430 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-07 09:06:52,430 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-07 09:06:52,431 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-07 09:06:52,431 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 09:06:52,431 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-07 09:06:52,432 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-07 09:06:52,432 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-07 09:06:52,432 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-07 09:06:52,432 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-07 09:06:52,432 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-07 09:06:52,432 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-07 09:06:52,433 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-07 09:06:52,433 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-07 09:06:52,495 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-07 09:06:52,511 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-07 09:06:52,517 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-07 09:06:52,518 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-07 09:06:52,519 INFO L276 PluginConnector]: CDTParser initialized [2018-11-07 09:06:52,519 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem15_label26_true-unreach-call.c [2018-11-07 09:06:52,587 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a9be275dd/c29bd272089c4ac48c7fb62630f57cc2/FLAG572679367 [2018-11-07 09:06:53,188 INFO L298 CDTParser]: Found 1 translation units. [2018-11-07 09:06:53,190 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem15_label26_true-unreach-call.c [2018-11-07 09:06:53,217 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a9be275dd/c29bd272089c4ac48c7fb62630f57cc2/FLAG572679367 [2018-11-07 09:06:53,233 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a9be275dd/c29bd272089c4ac48c7fb62630f57cc2 [2018-11-07 09:06:53,248 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-07 09:06:53,251 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-07 09:06:53,254 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-07 09:06:53,255 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-07 09:06:53,259 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-07 09:06:53,260 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 09:06:53" (1/1) ... [2018-11-07 09:06:53,264 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4397ec07 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:06:53, skipping insertion in model container [2018-11-07 09:06:53,264 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 09:06:53" (1/1) ... [2018-11-07 09:06:53,275 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-07 09:06:53,368 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-07 09:06:54,336 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 09:06:54,341 INFO L189 MainTranslator]: Completed pre-run [2018-11-07 09:06:54,621 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 09:06:54,642 INFO L193 MainTranslator]: Completed translation [2018-11-07 09:06:54,643 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:06:54 WrapperNode [2018-11-07 09:06:54,643 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-07 09:06:54,644 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-07 09:06:54,644 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-07 09:06:54,644 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-07 09:06:54,654 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:06:54" (1/1) ... [2018-11-07 09:06:54,874 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:06:54" (1/1) ... [2018-11-07 09:06:54,884 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-07 09:06:54,885 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-07 09:06:54,885 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-07 09:06:54,885 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-07 09:06:54,897 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:06:54" (1/1) ... [2018-11-07 09:06:54,898 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:06:54" (1/1) ... [2018-11-07 09:06:54,908 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:06:54" (1/1) ... [2018-11-07 09:06:54,908 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:06:54" (1/1) ... [2018-11-07 09:06:54,962 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:06:54" (1/1) ... [2018-11-07 09:06:55,002 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:06:54" (1/1) ... [2018-11-07 09:06:55,023 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:06:54" (1/1) ... [2018-11-07 09:06:55,040 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-07 09:06:55,041 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-07 09:06:55,041 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-07 09:06:55,041 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-07 09:06:55,042 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:06:54" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 09:06:55,125 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-07 09:06:55,126 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-07 09:06:55,126 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-07 09:06:55,126 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-11-07 09:06:55,126 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-11-07 09:06:55,127 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-07 09:06:55,127 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-07 09:06:55,127 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-07 09:06:55,128 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-07 09:06:55,128 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-07 09:06:55,128 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-07 09:07:01,145 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-07 09:07:01,146 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 09:07:01 BoogieIcfgContainer [2018-11-07 09:07:01,147 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-07 09:07:01,148 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-07 09:07:01,148 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-07 09:07:01,151 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-07 09:07:01,152 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 09:06:53" (1/3) ... [2018-11-07 09:07:01,152 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25fb5e9b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 09:07:01, skipping insertion in model container [2018-11-07 09:07:01,153 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:06:54" (2/3) ... [2018-11-07 09:07:01,153 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25fb5e9b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 09:07:01, skipping insertion in model container [2018-11-07 09:07:01,153 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 09:07:01" (3/3) ... [2018-11-07 09:07:01,155 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem15_label26_true-unreach-call.c [2018-11-07 09:07:01,165 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-07 09:07:01,176 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-07 09:07:01,193 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-07 09:07:01,239 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-07 09:07:01,239 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-07 09:07:01,239 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-07 09:07:01,239 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-07 09:07:01,239 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-07 09:07:01,240 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-07 09:07:01,240 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-07 09:07:01,240 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-07 09:07:01,280 INFO L276 IsEmpty]: Start isEmpty. Operand 438 states. [2018-11-07 09:07:01,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2018-11-07 09:07:01,290 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 09:07:01,291 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 09:07:01,294 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 09:07:01,300 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:07:01,300 INFO L82 PathProgramCache]: Analyzing trace with hash 1626414812, now seen corresponding path program 1 times [2018-11-07 09:07:01,303 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 09:07:01,356 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:07:01,356 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:07:01,356 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:07:01,356 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 09:07:01,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:07:01,887 WARN L179 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 8 DAG size of output: 3 [2018-11-07 09:07:01,914 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 09:07:01,917 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 09:07:01,917 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-07 09:07:01,917 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 09:07:01,924 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-07 09:07:01,940 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-07 09:07:01,941 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 09:07:01,944 INFO L87 Difference]: Start difference. First operand 438 states. Second operand 4 states. [2018-11-07 09:07:08,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 09:07:08,417 INFO L93 Difference]: Finished difference Result 1558 states and 2849 transitions. [2018-11-07 09:07:08,418 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-07 09:07:08,420 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 60 [2018-11-07 09:07:08,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 09:07:08,450 INFO L225 Difference]: With dead ends: 1558 [2018-11-07 09:07:08,450 INFO L226 Difference]: Without dead ends: 1114 [2018-11-07 09:07:08,462 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 09:07:08,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1114 states. [2018-11-07 09:07:08,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1114 to 1091. [2018-11-07 09:07:08,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1091 states. [2018-11-07 09:07:08,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1091 states to 1091 states and 1853 transitions. [2018-11-07 09:07:08,641 INFO L78 Accepts]: Start accepts. Automaton has 1091 states and 1853 transitions. Word has length 60 [2018-11-07 09:07:08,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 09:07:08,642 INFO L480 AbstractCegarLoop]: Abstraction has 1091 states and 1853 transitions. [2018-11-07 09:07:08,642 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-07 09:07:08,642 INFO L276 IsEmpty]: Start isEmpty. Operand 1091 states and 1853 transitions. [2018-11-07 09:07:08,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2018-11-07 09:07:08,666 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 09:07:08,666 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 09:07:08,667 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 09:07:08,667 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:07:08,667 INFO L82 PathProgramCache]: Analyzing trace with hash -30432942, now seen corresponding path program 1 times [2018-11-07 09:07:08,667 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 09:07:08,669 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:07:08,671 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:07:08,671 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:07:08,671 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 09:07:08,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:07:08,963 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 53 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 09:07:08,963 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 09:07:08,963 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-07 09:07:08,964 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 09:07:08,966 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-07 09:07:08,966 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-07 09:07:08,966 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-07 09:07:08,967 INFO L87 Difference]: Start difference. First operand 1091 states and 1853 transitions. Second operand 5 states. [2018-11-07 09:07:14,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 09:07:14,464 INFO L93 Difference]: Finished difference Result 3243 states and 5585 transitions. [2018-11-07 09:07:14,466 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-07 09:07:14,466 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 133 [2018-11-07 09:07:14,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 09:07:14,487 INFO L225 Difference]: With dead ends: 3243 [2018-11-07 09:07:14,487 INFO L226 Difference]: Without dead ends: 2158 [2018-11-07 09:07:14,494 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-11-07 09:07:14,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2158 states. [2018-11-07 09:07:14,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2158 to 2114. [2018-11-07 09:07:14,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2114 states. [2018-11-07 09:07:14,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2114 states to 2114 states and 3176 transitions. [2018-11-07 09:07:14,584 INFO L78 Accepts]: Start accepts. Automaton has 2114 states and 3176 transitions. Word has length 133 [2018-11-07 09:07:14,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 09:07:14,584 INFO L480 AbstractCegarLoop]: Abstraction has 2114 states and 3176 transitions. [2018-11-07 09:07:14,584 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-07 09:07:14,585 INFO L276 IsEmpty]: Start isEmpty. Operand 2114 states and 3176 transitions. [2018-11-07 09:07:14,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2018-11-07 09:07:14,587 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 09:07:14,588 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 09:07:14,588 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 09:07:14,588 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:07:14,589 INFO L82 PathProgramCache]: Analyzing trace with hash -1329379774, now seen corresponding path program 1 times [2018-11-07 09:07:14,589 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 09:07:14,590 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:07:14,590 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:07:14,590 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:07:14,590 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 09:07:14,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:07:14,790 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 53 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 09:07:14,791 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 09:07:14,791 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-07 09:07:14,791 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 09:07:14,792 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-07 09:07:14,792 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-07 09:07:14,792 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 09:07:14,792 INFO L87 Difference]: Start difference. First operand 2114 states and 3176 transitions. Second operand 4 states. [2018-11-07 09:07:22,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 09:07:22,841 INFO L93 Difference]: Finished difference Result 7960 states and 12495 transitions. [2018-11-07 09:07:22,844 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-07 09:07:22,844 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 141 [2018-11-07 09:07:22,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 09:07:22,890 INFO L225 Difference]: With dead ends: 7960 [2018-11-07 09:07:22,890 INFO L226 Difference]: Without dead ends: 5852 [2018-11-07 09:07:22,916 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 09:07:22,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5852 states. [2018-11-07 09:07:23,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5852 to 5847. [2018-11-07 09:07:23,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5847 states. [2018-11-07 09:07:23,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5847 states to 5847 states and 8247 transitions. [2018-11-07 09:07:23,100 INFO L78 Accepts]: Start accepts. Automaton has 5847 states and 8247 transitions. Word has length 141 [2018-11-07 09:07:23,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 09:07:23,101 INFO L480 AbstractCegarLoop]: Abstraction has 5847 states and 8247 transitions. [2018-11-07 09:07:23,101 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-07 09:07:23,101 INFO L276 IsEmpty]: Start isEmpty. Operand 5847 states and 8247 transitions. [2018-11-07 09:07:23,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2018-11-07 09:07:23,107 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 09:07:23,107 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 09:07:23,107 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 09:07:23,108 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:07:23,108 INFO L82 PathProgramCache]: Analyzing trace with hash -386539338, now seen corresponding path program 1 times [2018-11-07 09:07:23,109 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 09:07:23,110 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:07:23,110 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:07:23,110 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:07:23,110 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 09:07:23,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:07:23,419 WARN L179 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 09:07:23,487 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 53 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 09:07:23,487 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 09:07:23,487 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 09:07:23,487 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 09:07:23,488 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 09:07:23,488 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 09:07:23,489 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 09:07:23,489 INFO L87 Difference]: Start difference. First operand 5847 states and 8247 transitions. Second operand 6 states. [2018-11-07 09:07:27,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 09:07:27,374 INFO L93 Difference]: Finished difference Result 13531 states and 18782 transitions. [2018-11-07 09:07:27,383 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 09:07:27,383 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 160 [2018-11-07 09:07:27,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 09:07:27,424 INFO L225 Difference]: With dead ends: 13531 [2018-11-07 09:07:27,424 INFO L226 Difference]: Without dead ends: 7690 [2018-11-07 09:07:27,465 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-11-07 09:07:27,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7690 states. [2018-11-07 09:07:27,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7690 to 7626. [2018-11-07 09:07:27,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7626 states. [2018-11-07 09:07:27,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7626 states to 7626 states and 9939 transitions. [2018-11-07 09:07:27,661 INFO L78 Accepts]: Start accepts. Automaton has 7626 states and 9939 transitions. Word has length 160 [2018-11-07 09:07:27,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 09:07:27,661 INFO L480 AbstractCegarLoop]: Abstraction has 7626 states and 9939 transitions. [2018-11-07 09:07:27,661 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 09:07:27,662 INFO L276 IsEmpty]: Start isEmpty. Operand 7626 states and 9939 transitions. [2018-11-07 09:07:27,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2018-11-07 09:07:27,669 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 09:07:27,669 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 09:07:27,669 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 09:07:27,669 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:07:27,670 INFO L82 PathProgramCache]: Analyzing trace with hash -1240653666, now seen corresponding path program 1 times [2018-11-07 09:07:27,670 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 09:07:27,671 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:07:27,671 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:07:27,671 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:07:27,671 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 09:07:27,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:07:27,950 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 109 proven. 0 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2018-11-07 09:07:27,950 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 09:07:27,951 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-07 09:07:27,951 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 09:07:27,951 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-07 09:07:27,952 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-07 09:07:27,952 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 09:07:27,952 INFO L87 Difference]: Start difference. First operand 7626 states and 9939 transitions. Second operand 4 states. [2018-11-07 09:07:31,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 09:07:31,843 INFO L93 Difference]: Finished difference Result 24545 states and 32869 transitions. [2018-11-07 09:07:31,844 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-07 09:07:31,844 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 215 [2018-11-07 09:07:31,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 09:07:31,927 INFO L225 Difference]: With dead ends: 24545 [2018-11-07 09:07:31,927 INFO L226 Difference]: Without dead ends: 16925 [2018-11-07 09:07:31,970 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 09:07:31,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16925 states. [2018-11-07 09:07:32,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16925 to 16303. [2018-11-07 09:07:32,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16303 states. [2018-11-07 09:07:32,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16303 states to 16303 states and 20254 transitions. [2018-11-07 09:07:32,368 INFO L78 Accepts]: Start accepts. Automaton has 16303 states and 20254 transitions. Word has length 215 [2018-11-07 09:07:32,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 09:07:32,369 INFO L480 AbstractCegarLoop]: Abstraction has 16303 states and 20254 transitions. [2018-11-07 09:07:32,369 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-07 09:07:32,369 INFO L276 IsEmpty]: Start isEmpty. Operand 16303 states and 20254 transitions. [2018-11-07 09:07:32,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2018-11-07 09:07:32,384 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 09:07:32,385 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 09:07:32,385 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 09:07:32,386 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:07:32,386 INFO L82 PathProgramCache]: Analyzing trace with hash -624386788, now seen corresponding path program 1 times [2018-11-07 09:07:32,386 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 09:07:32,387 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:07:32,387 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:07:32,387 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:07:32,387 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 09:07:32,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:07:33,082 INFO L134 CoverageAnalysis]: Checked inductivity of 187 backedges. 111 proven. 2 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2018-11-07 09:07:33,082 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 09:07:33,082 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 09:07:33,083 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 242 with the following transitions: [2018-11-07 09:07:33,085 INFO L202 CegarAbsIntRunner]: [0], [1], [74], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [305], [313], [321], [329], [337], [345], [353], [361], [369], [377], [385], [393], [401], [409], [417], [425], [433], [441], [449], [453], [455], [458], [466], [474], [482], [490], [498], [506], [514], [522], [530], [538], [546], [554], [562], [567], [571], [582], [586], [590], [594], [598], [602], [606], [610], [614], [617], [618], [622], [626], [630], [641], [645], [649], [653], [657], [668], [672], [676], [680], [684], [688], [692], [696], [707], [711], [714], [1635], [1639], [1643], [1649], [1653], [1655], [1662], [1663], [1664], [1666], [1667] [2018-11-07 09:07:33,132 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-07 09:07:33,132 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 09:07:33,875 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 09:07:33,877 INFO L272 AbstractInterpreter]: Visited 105 different actions 105 times. Never merged. Never widened. Never found a fixpoint. Largest state had 24 variables. [2018-11-07 09:07:33,923 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:07:33,923 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 09:07:34,843 INFO L227 lantSequenceWeakener]: Weakened 232 states. On average, predicates are now at 78.13% of their original sizes. [2018-11-07 09:07:34,844 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 09:07:35,109 INFO L415 sIntCurrentIteration]: We unified 240 AI predicates to 240 [2018-11-07 09:07:35,109 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 09:07:35,110 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 09:07:35,114 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [7] total 11 [2018-11-07 09:07:35,114 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 09:07:35,115 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 09:07:35,115 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 09:07:35,115 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 09:07:35,115 INFO L87 Difference]: Start difference. First operand 16303 states and 20254 transitions. Second operand 6 states. [2018-11-07 09:08:46,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 09:08:46,526 INFO L93 Difference]: Finished difference Result 32910 states and 40864 transitions. [2018-11-07 09:08:46,526 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-11-07 09:08:46,526 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 241 [2018-11-07 09:08:46,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 09:08:46,582 INFO L225 Difference]: With dead ends: 32910 [2018-11-07 09:08:46,582 INFO L226 Difference]: Without dead ends: 16613 [2018-11-07 09:08:46,623 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 241 GetRequests, 236 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2018-11-07 09:08:46,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16613 states. [2018-11-07 09:08:46,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16613 to 16611. [2018-11-07 09:08:46,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16611 states. [2018-11-07 09:08:47,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16611 states to 16611 states and 20571 transitions. [2018-11-07 09:08:47,007 INFO L78 Accepts]: Start accepts. Automaton has 16611 states and 20571 transitions. Word has length 241 [2018-11-07 09:08:47,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 09:08:47,008 INFO L480 AbstractCegarLoop]: Abstraction has 16611 states and 20571 transitions. [2018-11-07 09:08:47,008 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 09:08:47,008 INFO L276 IsEmpty]: Start isEmpty. Operand 16611 states and 20571 transitions. [2018-11-07 09:08:47,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 338 [2018-11-07 09:08:47,027 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 09:08:47,027 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 09:08:47,028 INFO L423 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 09:08:47,028 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:08:47,028 INFO L82 PathProgramCache]: Analyzing trace with hash 675271699, now seen corresponding path program 1 times [2018-11-07 09:08:47,028 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 09:08:47,029 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:08:47,030 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:08:47,030 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:08:47,030 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 09:08:47,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:08:48,153 WARN L179 SmtUtils]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2018-11-07 09:08:48,506 WARN L179 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 26 [2018-11-07 09:08:48,823 INFO L134 CoverageAnalysis]: Checked inductivity of 417 backedges. 243 proven. 169 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-11-07 09:08:48,823 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 09:08:48,824 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 09:08:48,824 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 338 with the following transitions: [2018-11-07 09:08:48,824 INFO L202 CegarAbsIntRunner]: [0], [1], [74], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [305], [313], [321], [329], [337], [345], [353], [361], [369], [377], [385], [393], [401], [409], [417], [425], [433], [441], [449], [453], [455], [458], [466], [474], [482], [490], [498], [506], [514], [522], [530], [538], [546], [554], [562], [567], [571], [582], [586], [590], [594], [598], [602], [606], [610], [614], [617], [618], [622], [626], [630], [641], [645], [649], [653], [657], [668], [672], [676], [680], [684], [688], [691], [692], [696], [707], [711], [714], [1635], [1639], [1643], [1649], [1653], [1655], [1662], [1663], [1664], [1666], [1667] [2018-11-07 09:08:48,829 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-07 09:08:48,830 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 09:08:49,101 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 09:08:49,102 INFO L272 AbstractInterpreter]: Visited 109 different actions 314 times. Merged at 5 different actions 9 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-11-07 09:08:49,112 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:08:49,112 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 09:08:49,453 INFO L227 lantSequenceWeakener]: Weakened 334 states. On average, predicates are now at 83.99% of their original sizes. [2018-11-07 09:08:49,454 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 09:08:49,572 INFO L415 sIntCurrentIteration]: We unified 336 AI predicates to 336 [2018-11-07 09:08:49,573 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 09:08:49,573 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 09:08:49,573 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [11] total 18 [2018-11-07 09:08:49,573 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 09:08:49,574 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-11-07 09:08:49,574 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-11-07 09:08:49,574 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2018-11-07 09:08:49,575 INFO L87 Difference]: Start difference. First operand 16611 states and 20571 transitions. Second operand 9 states. [2018-11-07 09:09:37,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 09:09:37,273 INFO L93 Difference]: Finished difference Result 33538 states and 41570 transitions. [2018-11-07 09:09:37,274 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-11-07 09:09:37,274 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 337 [2018-11-07 09:09:37,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 09:09:37,343 INFO L225 Difference]: With dead ends: 33538 [2018-11-07 09:09:37,343 INFO L226 Difference]: Without dead ends: 17241 [2018-11-07 09:09:37,389 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 342 GetRequests, 329 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=56, Invalid=154, Unknown=0, NotChecked=0, Total=210 [2018-11-07 09:09:37,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17241 states. [2018-11-07 09:09:37,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17241 to 17238. [2018-11-07 09:09:37,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17238 states. [2018-11-07 09:09:37,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17238 states to 17238 states and 21243 transitions. [2018-11-07 09:09:37,693 INFO L78 Accepts]: Start accepts. Automaton has 17238 states and 21243 transitions. Word has length 337 [2018-11-07 09:09:37,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 09:09:37,694 INFO L480 AbstractCegarLoop]: Abstraction has 17238 states and 21243 transitions. [2018-11-07 09:09:37,694 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-11-07 09:09:37,694 INFO L276 IsEmpty]: Start isEmpty. Operand 17238 states and 21243 transitions. [2018-11-07 09:09:37,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 434 [2018-11-07 09:09:37,710 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 09:09:37,711 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 09:09:37,711 INFO L423 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 09:09:37,711 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:09:37,711 INFO L82 PathProgramCache]: Analyzing trace with hash 860033750, now seen corresponding path program 1 times [2018-11-07 09:09:37,712 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 09:09:37,712 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:09:37,713 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:09:37,713 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:09:37,713 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 09:09:37,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:09:38,478 INFO L134 CoverageAnalysis]: Checked inductivity of 192 backedges. 190 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 09:09:38,479 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 09:09:38,479 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 09:09:38,479 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 434 with the following transitions: [2018-11-07 09:09:38,481 INFO L202 CegarAbsIntRunner]: [0], [1], [74], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [305], [313], [321], [329], [337], [345], [353], [361], [369], [377], [385], [393], [401], [409], [417], [425], [433], [441], [449], [453], [455], [458], [466], [474], [482], [490], [498], [506], [514], [522], [530], [538], [546], [554], [562], [567], [571], [582], [586], [590], [594], [598], [602], [606], [610], [614], [618], [622], [626], [630], [641], [644], [645], [649], [653], [657], [668], [672], [676], [680], [684], [688], [692], [696], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [755], [759], [763], [767], [771], [775], [779], [783], [787], [798], [809], [813], [824], [835], [839], [850], [854], [865], [869], [873], [877], [881], [885], [896], [900], [904], [908], [912], [916], [920], [924], [935], [939], [943], [947], [951], [955], [959], [963], [967], [971], [975], [979], [983], [987], [991], [1002], [1006], [1010], [1014], [1018], [1029], [1033], [1037], [1041], [1045], [1049], [1053], [1057], [1061], [1072], [1076], [1080], [1084], [1088], [1092], [1096], [1100], [1104], [1108], [1112], [1116], [1120], [1124], [1128], [1132], [1136], [1140], [1144], [1148], [1152], [1156], [1160], [1164], [1168], [1172], [1176], [1180], [1191], [1202], [1206], [1210], [1214], [1218], [1229], [1233], [1237], [1241], [1245], [1256], [1260], [1264], [1268], [1272], [1276], [1280], [1284], [1288], [1292], [1296], [1300], [1304], [1308], [1312], [1316], [1320], [1324], [1328], [1332], [1336], [1340], [1344], [1348], [1352], [1356], [1367], [1371], [1375], [1379], [1383], [1394], [1398], [1402], [1406], [1417], [1421], [1425], [1429], [1433], [1437], [1441], [1452], [1456], [1460], [1471], [1475], [1486], [1490], [1494], [1498], [1502], [1506], [1510], [1514], [1518], [1522], [1526], [1530], [1534], [1538], [1542], [1546], [1550], [1554], [1558], [1562], [1566], [1570], [1581], [1585], [1589], [1593], [1597], [1601], [1612], [1616], [1620], [1623], [1635], [1639], [1643], [1649], [1653], [1655], [1662], [1663], [1664], [1666], [1667] [2018-11-07 09:09:38,503 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-07 09:09:38,504 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 09:09:39,395 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-07 09:09:39,396 INFO L272 AbstractInterpreter]: Visited 296 different actions 1169 times. Merged at 7 different actions 20 times. Never widened. Found 4 fixpoints after 1 different actions. Largest state had 24 variables. [2018-11-07 09:09:39,431 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:09:39,433 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-07 09:09:39,433 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 09:09:39,433 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-07 09:09:39,451 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:09:39,452 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 09:09:39,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:09:39,638 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 09:09:40,092 INFO L134 CoverageAnalysis]: Checked inductivity of 192 backedges. 190 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 09:09:40,093 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-07 09:09:40,825 INFO L134 CoverageAnalysis]: Checked inductivity of 192 backedges. 190 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 09:09:40,858 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-07 09:09:40,859 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 11 [2018-11-07 09:09:40,859 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-07 09:09:40,861 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-11-07 09:09:40,861 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-11-07 09:09:40,861 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2018-11-07 09:09:40,862 INFO L87 Difference]: Start difference. First operand 17238 states and 21243 transitions. Second operand 9 states. [2018-11-07 09:09:49,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 09:09:49,245 INFO L93 Difference]: Finished difference Result 42547 states and 59359 transitions. [2018-11-07 09:09:49,248 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-11-07 09:09:49,248 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 433 [2018-11-07 09:09:49,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 09:09:49,463 INFO L225 Difference]: With dead ends: 42547 [2018-11-07 09:09:49,463 INFO L226 Difference]: Without dead ends: 26250 [2018-11-07 09:09:49,673 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 887 GetRequests, 868 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=128, Invalid=252, Unknown=0, NotChecked=0, Total=380 [2018-11-07 09:09:49,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26250 states. [2018-11-07 09:09:50,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26250 to 26124. [2018-11-07 09:09:50,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26124 states. [2018-11-07 09:09:50,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26124 states to 26124 states and 33027 transitions. [2018-11-07 09:09:50,732 INFO L78 Accepts]: Start accepts. Automaton has 26124 states and 33027 transitions. Word has length 433 [2018-11-07 09:09:50,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 09:09:50,733 INFO L480 AbstractCegarLoop]: Abstraction has 26124 states and 33027 transitions. [2018-11-07 09:09:50,733 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-11-07 09:09:50,733 INFO L276 IsEmpty]: Start isEmpty. Operand 26124 states and 33027 transitions. [2018-11-07 09:09:50,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 444 [2018-11-07 09:09:50,750 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 09:09:50,750 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 09:09:50,751 INFO L423 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 09:09:50,751 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:09:50,751 INFO L82 PathProgramCache]: Analyzing trace with hash 972061646, now seen corresponding path program 1 times [2018-11-07 09:09:50,751 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 09:09:50,752 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:09:50,752 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:09:50,752 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:09:50,753 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 09:09:50,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:09:51,328 INFO L134 CoverageAnalysis]: Checked inductivity of 427 backedges. 332 proven. 2 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2018-11-07 09:09:51,328 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 09:09:51,328 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 09:09:51,328 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 444 with the following transitions: [2018-11-07 09:09:51,329 INFO L202 CegarAbsIntRunner]: [0], [1], [74], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [305], [313], [321], [329], [337], [345], [353], [361], [369], [377], [385], [393], [401], [409], [417], [425], [433], [441], [449], [453], [455], [458], [466], [474], [482], [490], [498], [506], [514], [522], [530], [538], [546], [554], [562], [567], [571], [582], [586], [590], [594], [598], [602], [606], [610], [614], [618], [622], [626], [630], [641], [644], [645], [649], [653], [657], [668], [672], [676], [680], [684], [688], [691], [692], [696], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [755], [759], [763], [767], [771], [775], [779], [783], [787], [798], [809], [813], [824], [835], [839], [850], [854], [865], [869], [873], [877], [881], [885], [896], [900], [904], [908], [912], [916], [920], [924], [935], [939], [943], [947], [951], [955], [959], [963], [967], [971], [975], [979], [983], [987], [991], [1002], [1006], [1010], [1014], [1018], [1029], [1033], [1037], [1041], [1045], [1049], [1053], [1057], [1061], [1072], [1076], [1080], [1084], [1088], [1092], [1096], [1100], [1104], [1108], [1112], [1116], [1120], [1124], [1128], [1132], [1136], [1140], [1144], [1148], [1152], [1156], [1160], [1164], [1168], [1172], [1176], [1180], [1191], [1202], [1206], [1209], [1635], [1639], [1643], [1649], [1653], [1655], [1662], [1663], [1664], [1666], [1667] [2018-11-07 09:09:51,336 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-07 09:09:51,336 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 09:09:52,822 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-07 09:09:52,822 INFO L272 AbstractInterpreter]: Visited 211 different actions 1040 times. Merged at 8 different actions 32 times. Never widened. Found 7 fixpoints after 2 different actions. Largest state had 24 variables. [2018-11-07 09:09:52,860 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:09:52,860 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-07 09:09:52,860 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 09:09:52,860 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-07 09:09:52,872 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:09:52,873 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 09:09:52,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:09:52,999 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 09:09:53,442 INFO L134 CoverageAnalysis]: Checked inductivity of 427 backedges. 332 proven. 2 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2018-11-07 09:09:53,442 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-07 09:09:54,131 INFO L134 CoverageAnalysis]: Checked inductivity of 427 backedges. 332 proven. 2 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2018-11-07 09:09:54,167 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-07 09:09:54,167 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 11 [2018-11-07 09:09:54,168 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-07 09:09:54,169 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-11-07 09:09:54,170 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-11-07 09:09:54,170 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2018-11-07 09:09:54,170 INFO L87 Difference]: Start difference. First operand 26124 states and 33027 transitions. Second operand 9 states. [2018-11-07 09:10:00,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 09:10:00,510 INFO L93 Difference]: Finished difference Result 54500 states and 69412 transitions. [2018-11-07 09:10:00,510 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-11-07 09:10:00,511 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 443 [2018-11-07 09:10:00,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 09:10:00,647 INFO L225 Difference]: With dead ends: 54500 [2018-11-07 09:10:00,648 INFO L226 Difference]: Without dead ends: 29317 [2018-11-07 09:10:00,813 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 909 GetRequests, 890 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=128, Invalid=252, Unknown=0, NotChecked=0, Total=380 [2018-11-07 09:10:00,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29317 states. [2018-11-07 09:10:01,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29317 to 29099. [2018-11-07 09:10:01,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29099 states. [2018-11-07 09:10:01,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29099 states to 29099 states and 34094 transitions. [2018-11-07 09:10:01,377 INFO L78 Accepts]: Start accepts. Automaton has 29099 states and 34094 transitions. Word has length 443 [2018-11-07 09:10:01,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 09:10:01,378 INFO L480 AbstractCegarLoop]: Abstraction has 29099 states and 34094 transitions. [2018-11-07 09:10:01,378 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-11-07 09:10:01,378 INFO L276 IsEmpty]: Start isEmpty. Operand 29099 states and 34094 transitions. [2018-11-07 09:10:01,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 613 [2018-11-07 09:10:01,433 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 09:10:01,433 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 09:10:01,434 INFO L423 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 09:10:01,434 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:10:01,434 INFO L82 PathProgramCache]: Analyzing trace with hash 2095518928, now seen corresponding path program 1 times [2018-11-07 09:10:01,434 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 09:10:01,435 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:10:01,435 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:10:01,435 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:10:01,435 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 09:10:01,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:10:04,285 INFO L134 CoverageAnalysis]: Checked inductivity of 831 backedges. 125 proven. 622 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2018-11-07 09:10:04,285 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 09:10:04,286 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 09:10:04,286 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 613 with the following transitions: [2018-11-07 09:10:04,286 INFO L202 CegarAbsIntRunner]: [0], [1], [74], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [305], [313], [321], [329], [337], [345], [353], [361], [369], [377], [385], [393], [401], [409], [417], [425], [433], [441], [449], [453], [455], [458], [466], [474], [482], [490], [498], [506], [514], [522], [530], [538], [546], [554], [562], [567], [571], [582], [586], [590], [594], [598], [602], [606], [610], [614], [618], [622], [626], [630], [641], [644], [645], [649], [653], [657], [668], [672], [676], [680], [684], [688], [691], [692], [696], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [755], [759], [763], [767], [771], [775], [779], [783], [787], [798], [809], [813], [824], [835], [839], [850], [854], [865], [869], [873], [877], [881], [885], [896], [900], [904], [908], [912], [916], [920], [924], [935], [939], [943], [947], [951], [955], [959], [963], [967], [971], [975], [979], [983], [987], [991], [1002], [1006], [1010], [1014], [1018], [1029], [1033], [1037], [1041], [1045], [1049], [1053], [1057], [1060], [1061], [1072], [1076], [1080], [1084], [1088], [1092], [1096], [1100], [1104], [1108], [1112], [1116], [1120], [1124], [1128], [1132], [1136], [1140], [1144], [1148], [1152], [1156], [1160], [1164], [1168], [1172], [1176], [1180], [1191], [1202], [1206], [1209], [1635], [1639], [1643], [1649], [1653], [1655], [1662], [1663], [1664], [1666], [1667] [2018-11-07 09:10:04,290 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-07 09:10:04,291 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 09:10:05,077 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-07 09:10:05,077 INFO L272 AbstractInterpreter]: Visited 212 different actions 1045 times. Merged at 9 different actions 32 times. Never widened. Found 9 fixpoints after 3 different actions. Largest state had 24 variables. [2018-11-07 09:10:05,083 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:10:05,083 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-07 09:10:05,083 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 09:10:05,083 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-07 09:10:05,092 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:10:05,092 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 09:10:05,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:10:05,260 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 09:10:06,081 INFO L134 CoverageAnalysis]: Checked inductivity of 831 backedges. 596 proven. 41 refuted. 0 times theorem prover too weak. 194 trivial. 0 not checked. [2018-11-07 09:10:06,081 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-07 09:10:07,259 INFO L134 CoverageAnalysis]: Checked inductivity of 831 backedges. 227 proven. 508 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2018-11-07 09:10:07,279 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-07 09:10:07,280 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 9, 9] total 25 [2018-11-07 09:10:07,280 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-07 09:10:07,281 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2018-11-07 09:10:07,281 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2018-11-07 09:10:07,282 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=495, Unknown=0, NotChecked=0, Total=600 [2018-11-07 09:10:07,282 INFO L87 Difference]: Start difference. First operand 29099 states and 34094 transitions. Second operand 20 states. [2018-11-07 09:10:20,633 WARN L179 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 35 [2018-11-07 09:10:24,635 WARN L179 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 38 [2018-11-07 09:10:35,620 WARN L179 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 48 [2018-11-07 09:10:36,240 WARN L179 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 33 Received shutdown request... [2018-11-07 09:10:39,284 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 108 states. [2018-11-07 09:10:39,285 WARN L549 AbstractCegarLoop]: Verification canceled [2018-11-07 09:10:39,292 WARN L205 ceAbstractionStarter]: Timeout [2018-11-07 09:10:39,292 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 09:10:39 BoogieIcfgContainer [2018-11-07 09:10:39,292 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-07 09:10:39,293 INFO L168 Benchmark]: Toolchain (without parser) took 226043.51 ms. Allocated memory was 1.5 GB in the beginning and 4.0 GB in the end (delta: 2.5 GB). Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: -11.5 MB). Peak memory consumption was 2.5 GB. Max. memory is 7.1 GB. [2018-11-07 09:10:39,294 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-11-07 09:10:39,294 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1388.87 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 105.9 MB). Peak memory consumption was 105.9 MB. Max. memory is 7.1 GB. [2018-11-07 09:10:39,299 INFO L168 Benchmark]: Boogie Procedure Inliner took 240.82 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 731.9 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -861.8 MB). Peak memory consumption was 31.4 MB. Max. memory is 7.1 GB. [2018-11-07 09:10:39,300 INFO L168 Benchmark]: Boogie Preprocessor took 155.57 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 14.4 MB). Peak memory consumption was 14.4 MB. Max. memory is 7.1 GB. [2018-11-07 09:10:39,301 INFO L168 Benchmark]: RCFGBuilder took 6105.73 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.9 GB in the end (delta: 282.8 MB). Peak memory consumption was 282.8 MB. Max. memory is 7.1 GB. [2018-11-07 09:10:39,305 INFO L168 Benchmark]: TraceAbstraction took 218144.37 ms. Allocated memory was 2.3 GB in the beginning and 4.0 GB in the end (delta: 1.8 GB). Free memory was 1.9 GB in the beginning and 1.4 GB in the end (delta: 447.2 MB). Peak memory consumption was 2.2 GB. Max. memory is 7.1 GB. [2018-11-07 09:10:39,311 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1388.87 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 105.9 MB). Peak memory consumption was 105.9 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 240.82 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 731.9 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -861.8 MB). Peak memory consumption was 31.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 155.57 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 14.4 MB). Peak memory consumption was 14.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 6105.73 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.9 GB in the end (delta: 282.8 MB). Peak memory consumption was 282.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 218144.37 ms. Allocated memory was 2.3 GB in the beginning and 4.0 GB in the end (delta: 1.8 GB). Free memory was 1.9 GB in the beginning and 1.4 GB in the end (delta: 447.2 MB). Peak memory consumption was 2.2 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 166]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 166). Cancelled while BasicCegarLoop was constructing difference of abstraction (29099states) and FLOYD_HOARE automaton (currently 108 states, 20 states before enhancement),while ReachableStatesComputation was computing reachable states (62208 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 438 locations, 1 error locations. TIMEOUT Result, 218.0s OverallTime, 10 OverallIterations, 5 TraceHistogramMax, 194.9s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 2827 SDtfs, 26316 SDslu, 4092 SDs, 0 SdLazy, 39785 SolverSat, 7684 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 147.5s Time, PredicateUnifierStatistics: 4 DeclaredPredicates, 3858 GetRequests, 3649 SyntacticMatches, 10 SemanticMatches, 199 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6597 ImplicationChecksByTransitivity, 10.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=29099occurred in iteration=9, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 4.4s AbstIntTime, 5 AbstIntIterations, 2 AbstIntStrong, 0.9970529203839968 AbsIntWeakeningRatio, 0.10069444444444445 AbsIntAvgWeakeningVarsNumRemoved, 15.440972222222221 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 3.3s AutomataMinimizationTime, 9 MinimizatonAttempts, 1107 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.2s SsaConstructionTime, 0.8s SatisfiabilityAnalysisTime, 10.2s InterpolantComputationTime, 4263 NumberOfCodeBlocks, 4263 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 5735 ConstructedInterpolants, 0 QuantifiedInterpolants, 15187560 SizeOfPredicates, 8 NumberOfNonLiveVariables, 2144 ConjunctsInSsa, 25 ConjunctsInUnsatCore, 16 InterpolantComputations, 5 PerfectInterpolantSequences, 3939/5293 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown